A telephone, radiophone, phonograph, and Aldis lamp demonstrated in the United States.

A film on technological advancements, innovations, and inventions in the United States during the industrial age and industrial revolution. An actor portraying Benjamin Franklin talks to other men. A man explains to him how a wireless is operated. Benjamin Franklin at a telephone switchboard. An operator hands him earphones. Franklin listens. A radiophone in operation. A recording being played on a phonograph. Franklin listens to radio. Two men, standing near a biplane aircraft, operate a battery-powered Aldis lamp. (Slate incorrectly refers to Heliograph, which uses the sun as light source.) One man uses a sight to aim the lamp at the intended recipient of the message. The other man, holding the battery, sends coded message by operating a key on the battery box. Biplane in flight overhead signals back. Franklin seated at a desk writes in candlelight.